PartsTable
Technical Data Sheet
Download PDF

ST7M189T4 — COUPLING,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

ST7M189T4: COUPLING,TUBE.

The COUPLING,TUBE is a the manufacturer industrial component. Key specifications include material: TITANIUM ALLOY UNS R54520 OUTSIDE, connection_type: UNTHREADED INTERNAL TUBE ALL ENDSUNTHREADED INTERNAL TUBE ALL ENDS, connection_style: SWAGED W/ GROOVES (TUBE) ALL ENDSSWAGED W/ GROOVES (TUBE) ALL ENDS, style_designator: SWAGED BOTH ENDS, surface_treatment: PLASTIC POLYTETRAFLUOROETHYLENE OUTSIDE, operating_pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-294-1531, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
ST7M189T4
NSN: 4730-00-294-1531
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialTITANIUM ALLOY UNS R54520 OUTSIDE
connection_typeUNTHREADED INTERNAL TUBE ALL ENDSUNTHREADED INTERNAL TUBE ALL ENDS
connection_styleSWAGED W/ GROOVES (TUBE) ALL ENDSSWAGED W/ GROOVES (TUBE) ALL ENDS
special_featuresPOLYTETRAFLUOROETHYLENE COATED 0.188 MIN 0.240 MAX IN. INTO EACH END OF FITTING; HAS A 0.625 IN. WIDE BAND FREE OF POLYTETRAFLUOROETHYLENE ON OUTSIDE CENTRALLY LOCATED IN
style_designatorSWAGED BOTH ENDS
surface_treatmentPLASTIC POLYTETRAFLUOROETHYLENE OUTSIDE
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
maximum_operating_temp275.0 FAHRENHEIT SINGLE RESPONSE275.0 FAHRENHEIT SINGLE RESPONSE DEGF
nominal_overall_length1.535 INCHES IN
media_for_which_designedHYDRAULIC FLUID SINGLE RESPONSE
nominal_outside_diameter_tube_accommodated0.250 INCHES ALL ENDS IN
NSN4730-00-294-1531
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: ST7M189T4 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CONNECTION STYLE: SWAGED W/ GROOVES (TUBE) ALL ENDSSWAGED W/ GROOVES (TUBE) ALL ENDS
•
NOMINAL OVERALL LENGTH: 1.535 INCHES IN
•
CONNECTION TYPE: UNTHREADED INTERNAL TUBE ALL ENDSUNTHREADED INTERNAL TUBE ALL ENDS
•
STYLE DESIGNATOR: SWAGED BOTH ENDS
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES ALL ENDS IN
•
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
MAXIMUM OPERATING TEMP: 275.0 FAHRENHEIT SINGLE RESPONSE275.0 FAHRENHEIT SINGLE RESPONSE DEGF
TECHNICAL CHARACTERISTICS
CONNECTION STYLESWAGED W/ GROOVES (TUBE) ALL ENDSSWAGED W/ GROOVES (TUBE) ALL ENDS
NOMINAL OVERALL LENGTH1.535 INCHES IN
CONNECTION TYPEUNTHREADED INTERNAL TUBE ALL ENDSUNTHREADED INTERNAL TUBE ALL ENDS
STYLE DESIGNATORSWAGED BOTH ENDS
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES ALL ENDS IN
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MAXIMUM OPERATING TEMP275.0 FAHRENHEIT SINGLE RESPONSE275.0 FAHRENHEIT SINGLE RESPONSE DEGF
SPECIAL FEATURESPOLYTETRAFLUOROETHYLENE COATED 0.188 MIN 0.240 MAX IN. INTO EACH END OF FITTING; HAS A 0.625 IN. WIDE BAND FREE OF POLYTETRAFLUOROETHYLENE ON OUTSIDE CENTRALLY LOCATED IN
SURFACE TREATMENTPLASTIC POLYTETRAFLUOROETHYLENE OUTSIDE
MEDIA FOR WHICH DESIGNEDHYDRAULIC FLUID SINGLE RESPONSE
SUBSTITUTES & CROSS-REFERENCES 8
D10036E4Reference document
Same NSN cross-reference
Reference document — Secondary reference
AC1050T04Reference document
Same NSN cross-reference
Reference document — Secondary reference
H10036E04Reference document
Same NSN cross-reference
Reference document — Secondary reference
LD83020E04Reference document
Same NSN cross-reference
Reference document — Secondary reference
ST7M189Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LD83020E06Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandDemilitarization required — critical (Q)
Ready to buy ST7M189T4?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is ST7M189T4?
ST7M189T4 is a COUPLING,TUBE.
What parts can replace ST7M189T4?
There are 8 known substitutes for ST7M189T4: D10036E4, AC1050T04, H10036E04 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ST7M189T4?
ST7M189T4 is cataloged in the U.S. Government catalog under NSN 4730-00-294-1531. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — ST7M189T4

✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.